the same weapon used in the newtown connecticut massacre. he also had plenty of ammunition. >> when i was being told by investigators there were a lot of ammunition around. he was ready to go to war. >> reporter: authorities say they believe they found his sister's remains in the house the two shared and that spangler set ablaze. >> we did locate apparent human remains in the ruins. the assumption is that it's the shooter's sister. >> reporter: why spangler the set off the attack nobody knows. when spangl er's mother recently died she asked for doe neighs to the fire department. we may never know what was going through his mind. >>> it was a somber christmas in newtown connecticut as the sidewalk memorial for the 26 victims killed at an elementary school almost two weeks ago continues to grow. today volunteers kept watch over a candlelight vigil to make sure they remained burning all day. police officers from near by towns filled in for newtown police to make sure they had christmas off. >>> here at home crews in santa clara county spent the